http://developer.51cto.com/art/201107/277994.htm
onscroll事件
window.onscroll|| document.onscroll
var scroll = document.documentElement.scrollTop || document.body.scrollTop;
2021-11-02 02:09:46
http://developer.51cto.com/art/201107/277994.htm
onscroll事件
window.onscroll|| document.onscroll
var scroll = document.documentElement.scrollTop || document.body.scrollTop;